Bug 2507624 (CVE-2026-64644) - CVE-2026-64644 next: Next.js: Denial of Service via malicious image optimization
Summary: CVE-2026-64644 next: Next.js: Denial of Service via malicious image optimization
Keywords:
Status: NEW
Alias: CVE-2026-64644
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-27 19:02 UTC by OSIDB Bzimport
Modified: 2026-07-28 13:25 UTC (History)
14 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-07-27 19:02:57 UTC 
Next.js is a React framework for building full-stack web applications. In versions 15.5.0 through 15.5.20 and 16.0.0 through 16.2.10, when self-hosting Next.js with the default image loader, the Image Optimization API can optimize remotely hosted images if configured (not enabled by default). If those images contain malicious content, they can cause CPU exhaustion in /_next/image endpoints.Only config.images.remotePatterns is affected, and just the patterns in that array, whereas config.images.unoptimized: true, config.images.loader: 'custom', and Vercel are not impacted. This issue has been fixed in versions 15.5.21 and 16.2.11.
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